package com.yuesystem.common;

import static com.fasterxml.jackson.databind.DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
import java.math.BigInteger;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;



/**
 * 对象映射器:基于jackson将Java对象转为json，或者将json转为Java对象.
 * 将JSON解析为Java对象的过程称为 [从JSON反序列化Java对象].
 * 从Java对象生成JSON的过程称为 [序列化Java对象到JSON].
 */
public class JacksonObjectMapper extends ObjectMapper {

  public static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";
  public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
  public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";

  /**
   * 对象映射.
   */
  public JacksonObjectMapper() {
    super();
    // 收到未知属性时不报异常
    this.configure(FAIL_ON_UNKNOWN_PROPERTIES, false);

    // 反序列化时，属性不存在的兼容处理
    this.getDeserializationConfig().withoutFeatures(
        DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);


    SimpleModule simpleModule = new SimpleModule()
        .addDeserializer(LocalDateTime.class,
            new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
        .addDeserializer(LocalDate.class, new LocalDateDeserializer(
            DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)))
        .addDeserializer(LocalTime.class, new LocalTimeDeserializer(
            DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)))

        .addSerializer(BigInteger.class, ToStringSerializer.instance)
        .addSerializer(Long.class, ToStringSerializer.instance)
        .addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(
            DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
        .addSerializer(LocalDate.class, new LocalDateSerializer(
            DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)))
        .addSerializer(LocalTime.class, new LocalTimeSerializer(
            DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));

    //注册功能模块 例如，可以添加自定义序列化器和反序列化器
    this.registerModule(simpleModule);
  }
}
